Tests for satellite clone

[LadislavVasina1]

I have implemented tests for satellite clone. Fixture that provides suitable RHEL for sat (6 cores, 20 GiB) to be installed to has been added too because none of the existing fixtures was suitable for me.
While implementing the tests I have found the wrong keys for rhel content host parametrization and I have also found an incorrect list of repos needed for sat installation on RHEL8 ('ansible-2.9-for-rhel-8-x86_64-rpms' deleted from list).

[omkarkhatavkar]

Can one of the admins verify this patch?

[Gauravtalreja1]

@LadislavVasina1 Nice addition, thanks for the PR, I've a few suggestions/questions

[LadislavVasina1]

Adding pytest output so you can clearly see test parametrization

<Package destructive>
  <Module test_clone.py>
    <Function test_positive_clone_backup[skip_pulp-online-8]>
    <Function test_positive_clone_backup[skip_pulp-offline-8]>
    <Function test_positive_clone_backup[no_skip_pulp-online-8]>
    <Function test_positive_clone_backup[no_skip_pulp-offline-8]>

[ogajduse]

I am OK with the current state of the PR, but I would like to get more feedback on my comments here. I will hold my ACK until the majority of them are answered.

[ogajduse]

ACK
I do not want to block this PR from merging anymore. However, we should implement the suggestions about dogfood_repofile presented in the review comments.

[lpramuk]

Change the way maintenance repository is set up

[vsedmik]

Nice work done here!
I thought we could create some content (function_product or some other fixture) before backup and assert it does exist on the target sat after clone. But this should be covered by backup/restore, so giving ACK. 👍

[lpramuk]

Initial stage completed
In future we definitely should introduce entities population and checks after them in the clone

Also I'd like to have spinning just 1 source satellite instead of 10 for each test/datapoint